Parameters 

Description 

Atm [struct] 

Atmospheric modeling parameters for a discrete atmosphere. Can be a structure from AtmStruct with fields hp, ht, L, h, z. 

FileName [string] 

(Optional, defaults to 'FAS_NORM2') The file name to be used in FASCODE. Users can input one of their files or use one from the library (Input_library) directory. Must be passed in (can be empty) if using optional arguments that follow. 

FieldName [string] 

The name of a parameter to be modified from the value in FileName. Available parameters are: 'LAMBDA'--Wavelength (m), 'MODEL'--Atmospheric model (1-6), 'IHAZE'--Aerosols model to be used (1-10), 'IVULCN'--Extinction type for stratospheric aerosols (1-8), 'ICLD'--inclusion of clouds (1-20), 'IAERSL' --Aerosols (0 or 1) 'ITYPE'--Type of path (1,2 (default)), 'HRANGE'--Horizontal path length, ITYPE=1 (m) 'VIS'--Surface meteorological range (km) 'FAS_EXE'--Filename of the FASCODE executable file. Must be in the ATMToolsPath/OTT/FASCODE folder. Defaults to FASCD3P.EXE 'LNFL_EXE'--Filename of the FASCODE executable file. Must be in the ATMToolsPath/OTT/HITRAN folder. Defaults to LNFL.exe 

FieldValue [scalar] 

The value of specified FieldName with units depending on FieldName as above. 

Return Values 

Description 

ExtCoeff [struct] 

Structure containing the extinction coefficients and information about the run parameters 

ExtCoeff.ver [string] 

Version of FASCODE run 

ExtCoeff.Name [struct] 

The name of each parameter included in the structure 

ExtCoeff.Value [struct] 

In which the values of the parameters are stored. 

ExtCoeff.Units [struct] 

The units of this parameter